import Vue from 'vue'
import VueRouter from 'vue-router'
import Login from '../components/Login.vue'
import Home from '../components/Home.vue'
import Welcome from '../components/Welcome.vue'
import Users from '../components/user/Users.vue'
import Rights from '../components/power/Rights.vue'
import Roles from '../components/power/Roles.vue'
import Cate from '../components/goods/Cate.vue'
Vue.use(VueRouter)



const router = new VueRouter({
  routes:[
    {
      path:'/',
      redirect:'/login'
    },
    {
      path:'/login',
      component:Login
    },
    {
      path:'/home',
      component:Home,
      redirect:'/welcom',
      children:[
        {
          path:'/welcom',
          component:Welcome
        },
        {
          path:'/users',
          component:Users
        },
        {
          path:'/rights',
          component:Rights
        },
        {
          path:'/roles',
          component:Roles
        },
        {
          path:'/categories',
          component:Cate
        }
      ]
    }
  ]
})

// 挂载路由导航守卫
router.beforeEach((to,from,next) =>{
  // to是将要访问的路径
  if(to.path === '/login')
    return next()
  // from是从哪里跳转来
  const tokenStr = window.sessionStorage.getItem('token')
  if(!tokenStr)
    return next('/login')
  // next是一个函数，表示放行
  next()
})
export default router
